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61.
On Choosing and Bounding Probability Metrics 总被引:6,自引:0,他引:6
When studying convergence of measures, an important issue is the choice of probability metric. We provide a summary and some new results concerning bounds among some important probability metrics/distances that are used by statisticians and probabilists. Knowledge of other metrics can provide a means of deriving bounds for another one in an applied problem. Considering other metrics can also provide alternate insights. We also give examples that show that rates of convergence can strongly depend on the metric chosen. Careful consideration is necessary when choosing a metric. 相似文献
62.
The economic effects of occupational licensing remain an understudied topic, but even less is known about the effects of the removal of licensing legislation. In this article, we take advantage of a natural experiment that occurred in the state of Alabama. Alabama was the last state to begin licensing barbers in 1973 and also the only state to de‐license barbers (in 1983). Relying on data from 1974 to 1994, we find evidence that barber de‐licensing reduced the average annual earnings of barbers as well as the number of cosmetologist employees per million residents in Alabama, although not all our results are statistically significant. We also find evidence that de‐licensing resulted in small increases in the number of barber shops and decreases in the number of cosmetology shops in Alabama. In recent decades, a number of attempts have been made to re‐license the occupation — most recently with a barber licensing bill that became law in September 2013. The result is that barbering in Alabama is once again a licensed occupation. Our limited evidence suggests that the re‐licensing of barbers in Alabama may already have had an effect on pay and on the number of barber shops. 相似文献
63.
Putu Liza Kusuma Mustika Riccardo Welters Gerard Edward Ryan Coralie D'Lima Patricia Sorongon-Yap Suwat Jutapruet 《Journal of Sustainable Tourism》2017,25(8):1138-1158
Dolphin-watching tourism is growing globally. In developing countries, the typically low environmental awareness of operators and poorly enforced or non-existent regulations exacerbate risks to wildlife. Ecological indicators like behavioural responses are useful to assess wildlife tourism, but obtaining such data is slow and expensive. We modified the Driver–Pressure–State–Impact–Response (DPSIR) framework to rapidly assess the risk of dolphin-watching tourism harming, displacing or causing local extinction to dolphin populations, using human dimension data to complement limited ecological data. We assessed industries at seven dolphin-watching sites in six countries in Asia: Cambodia, India, Indonesia, Malaysia, Thailand, and the Philippines. All sites have reached or almost reached financial saturation except Cambodia and Malaysia. We find high risk to dolphins at the sites in India and Indonesia and intermediate risk at the site in Cambodia. Pending more ecological data, the risk at Thailand, the Philippines, and Malaysian sites might be low. Our analysis also indicates site-specific conservation recommendations for Driver, Pressure and Response. We suggest that the DPSIR framework is useful to assess the risk of a wildlife watching industry, even when the impact is uncertain due to insufficient ecological data. 相似文献
64.
Does access to off-farm income complement or compete with agricultural production? This article explores the effect of off-farm income on agricultural production activities, using data from the 2003 Mexico National Rural Household Survey. We first discuss the theoretical conditions under which access to off-farm income may influence production in an agricultural household model. Instrumental-variable (IV) estimation methods are then used to test whether agricultural production activities, technologies, and input use differ between households with and without access to off-farm income. We find that off-farm income has a negative effect on agricultural output and the use of family labor on the farm, but a positive impact on the demand for purchased inputs. There is also a slight efficiency gain in households with access to off-farm income. Findings offer insights into how household production evolves as rural households increasingly engage in off-farm income activities. 相似文献
65.
Monopoly, competition and information acquisition 总被引:1,自引:0,他引:1
Magdalena Dimitrova Edward E. Schlee 《International Journal of Industrial Organization》2003,21(10):1623-1642
An incumbent monopolist is uncertain about its linear demand, but can acquire public information at a cost. We determine how an entry threat affects the firm's information acquisition. If returns to scale are constant and the state-contingent demands become more dispersed as output increases, then entry reduces information acquisition. If, however, either the incumbent or entrant has increasing returns; or if the state-contingent demands are nonlinear or fail increasing dispersion, then entry can increase information. Finally, entry can hurt consumers. Although entry always increases output, it can decrease information. Consumers sometimes prefer a better informed monopoly to a duopoly. 相似文献
66.
Barbering is one of the earliest professions to be licensed in the USA. This article discusses the origins of barber licensing, as well as its current status and scope, and then estimates the effects that such licensing has had on barbers' earnings. To estimate these effects we use micro‐level data from the 2000 US Census along with several measures of the strictness of state licensing of barbers. Our results suggest that certain licensing provisions may have increased barber earnings by between 11 and 22 per cent. The magnitude of our estimates is somewhat higher than those found in studies examining the effects of licensing in similar professions. 相似文献
67.
The Effects of Cognitive Problem-Solving Orientation and Technological Familiarity on Faster New Product Development 总被引:2,自引:0,他引:2
This study examines the relationships between speed of development and the cognitive problemsolving orientations of both members of the team and the project leader when they work with more familiar or less familiar technologies. Edward McDonough and Gloria Barczak collected data from 32 new product development projects in 12 British companies. They report that technological familiarity moderates the relationship between speed of development and the cognitive problem-solving orientation of both project leaders and project teams and they explore implications of these results for R&D managers. 相似文献
68.
Data gathered on 62 products from 26 biomedical firms founded in Massachusetts between 1968 and 1975 show a positive relationship between the level of technological sophistication of a firm's products and the risk associated with the use of those products. Oscar Hauptman and Edward Roberts report the results of their study of the impact of the U.S. Food and Drug Administration's approval process on these firms' resources and time. They found that young firms dealing with medical devices and pharmaceuticals were more sensitive to this regulatory process than those producing medical auxiliary products. Enactment of the 1976 FDA regulations amendment affecting medical devices apparently created a precarious environment for the marketing of new products. The amendment was found to have significant impact beyond its target product area, medical devices and supplies. It also challenged the management of firms producing drugs and Pharmaceuticals. 相似文献
69.
Jeremy A. Klein Edward P. Stacey Christopher J. Coggill Mick McLean May I. Sagua 《R&D Management》1996,26(1):5-15
This study sought to measure the economic consequences of reduced expenditure on specific sections of the UK National Measurement System (NMS), part of the state-funded technological infrastructure. A method was developed which can be adapted to any publicly or privately financed R&D of which the benefits and cost-effectiveness are unclear or contested.
The recent interactions between the NMS and industry were investigated empirically. Five mechanisms were found to account for the majority of instances of successful value creation. Several case studies of each mechanism were collected, illustrating their existence beyond reasonable doubt.
Each of the cut projects would have been expected to have encouraged growth and profitability in identified sectors of the economy through one or more of these five mechanisms. The effects of the cuts were modelled over 30 years. Compared to the costs of the cut projects projected over the same period, the benefits to the economy were predicted to exceed the costs. 相似文献
The recent interactions between the NMS and industry were investigated empirically. Five mechanisms were found to account for the majority of instances of successful value creation. Several case studies of each mechanism were collected, illustrating their existence beyond reasonable doubt.
Each of the cut projects would have been expected to have encouraged growth and profitability in identified sectors of the economy through one or more of these five mechanisms. The effects of the cuts were modelled over 30 years. Compared to the costs of the cut projects projected over the same period, the benefits to the economy were predicted to exceed the costs. 相似文献
70.
Joe Sacco is best known for works that blend journalism with the format and structure of comic books. Sacco’s prior work has considered themes of political conflict, legacies of violence, and marginalization across a range of geographic contexts, including Bosnia, the Middle East, and the United States. This interview, conducted by the authors with Joe Sacco on 16 November 2015, explores these and other themes in an attempt to situate the positionality and choices of the creator of geopolitical narratives in the broader literature on critical geopolitics. We consider the themes of subject, representation, audience response, and stylistic influences, among others, in our conversation. 相似文献